RT Journal Article SR Electronic T1 Double collimator isotope detection for study of carotid blood flow JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 1042 OP 1042 DO 10.1212/WNL.11.12.1042 VO 11 IS 12 A1 D. W. Lindner A1 A. I. King A1 H. R. Lissner A1 E. S. Gurdjian YR 1961 UL http://n.neurology.org/content/11/12/1042.abstract AB